- 2020 - present
2020 Medical Imaging Conference Co-ChairSPIE - The International Organization for Optics and Photonics
- 2017 - present
Vice ChairAmerican Association of Physicists in Medicine (AAPM), Task Group 300 on Establishment of a Framework for a National CT Image Quality Index Registry
- 2017 - present
MemberAmerican Association of Physicists in Medicine, Working Group on IEC Coordination
- 2017 - present
MemberProgram Committee, SPIE - The International Organization for Optics and Photonics
- 2016 - present
ChairRadiological Society of North America (RSNA), Refresher Course Committee Physics Track
- 2016 - present
MemberComputed Tomography Subcommittee, American Association of Physicists in Medicine
- 2016 - present
MemberInternational Electrotechnical Commission
- 2016 - present
Scientific Committee MemberSPIE - The International Organization for Optics and Photonics
- 2015 - 2016
Vice ChairRadiological Society of North America (RSNA), Refresher Course Committee Physics Track
- 2015 - present
MemberWorking Group on Optimization of Medical Imaging Systems and Techniques, American Association of Physicists in Medicine
- 2014 - present
Section HeadCT Physics Section, Department of Radiology
- 2013 - present
MemberSPIE - The International Organization for Optics and Photonics
- 2013
MemberRadiological Society of North America
- 2013 - 2015
Committee MemberAnnual Meeting Coordinate Committee, American Association of Physicists in Medicine
- 2013 - 2014
Scientific Program DirectorAmerican Association of Physicists in Medicine
- 2012 - 2013
Scientific Program Co-ChairAmerican Association of Physicists in Medicine
- 2012
Track ChairmanWorld Congress on Medical Physics and Biomedical Engineering
- 2012 - present
Scientific Session ModeratorAmerican Association of Physicists in Medicine
- 2012 - present
Scientific Committee MemberX-ray CT Meetings
- 2011 - 2012
MemberEducation Coordination Subcommittee, Radiological Society of North America
- 2007 - 2010
MemberRadLex CT Committee, Radiological Society of North America
- 2007 - present
MemberAmerican Association of Physicists in Medicine
- 2006 - 2016
MemberSociety of Cardiovascular Computed Tomography